title: A case of Langerhans' cell histiocytosis of the lung presenting with haemoptysis.
mesh_terms: D000328:Adult; D006469:Hemoptysis / Q000209:etiology*; D006646:Histiocytosis, Langerhans-Cell / Q000175:diagnosis*; D006801:Humans; D008297:Male; D012907:Smoking / Q000009:adverse effects